I know the gap for the stock 302 is like 054 or 056", but when do you have to start thinking about making it larger or smaller. I have a 347 now, and I was just about to put the plugs in her until I thought maybe some of you guys ran a larger or smaller plug gap with more cubic inches.
so is there a rule of thumb, or should you just stick with whats posted under the hood.
thanks for the help
so is there a rule of thumb, or should you just stick with whats posted under the hood.
thanks for the help